Topper. Thorne Smith

Topper (also known as The Jovial Ghosts) is a 1926 novel about a respectable banker named Cosmo Topper and his misadventures with a couple of ghosts. Topper was made into a 1937 film starring Cary Grant as George Kerby, Constance Bennett as Marion Kerby, and Roland Young as Cosmo Topper.